At the Victory Jump Carnival, it’s been revealed that the next major event in Duel Links will be…

“Ghouls/Rare Hunter Invasion! Hunt Down Yami Marik!”

You’ll be able to collect Event Points and Duel Yami Marik himself. We’ll keep you abreast of further information as it becomes available.

And it starts July 26th, 2017

Notably, Marik’s introduction brings with it the classic monster Lava Golem.

Source